SPECIFICATION FOR STAINLESS STEEL BARS AND SHAPES

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1 SPECIFICATION FOR STAINLESS STEEL BARS AND SHAPES A02 (Identical with ASTM Specification A ) 1. Scope 1.1 This specification covers hot-finished or coldfinished bars except bars for reforging (Note 1). It includes rounds, squares, and hexagons, and hot-rolled or extruded shapes, such as angles, tees, and channels in the more commonly used types of stainless steels. The free-machining types (Note 2), for general corrosion resistance and high-temperature service, are covered in a separate specification. NOTE 1 For bars for reforging, see Specification A 314. NOTE 2 For free-machining stainless bars designed especially for optimum machinability, see Specification A 582/A 582M. NOTE 3 There are standards covering high nickel, chromium, austenitic corrosion, and heat resisting alloy materials. These standards are under the jurisdiction of ASTM Subcommittee B02.07 and may be found in Annual Book of ASTM Standards, Vol The values stated in inch-pound units are to be regarded as the standard. 2. Referenced Documents 2.1 ASTM Standards: A 314 Specification for Stainless Steel Billets and Bars for Forging A 370 Test Methods and Definitions for Mechanical Testing of Steel Products A 484/A 484M Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings A 582/A 582M Specification for Free-Machining Stainless Steel Bars A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products E 527 Practice for Numbering Metals and Alloys (UNS) 2.2 Other Document: SAE J1086 Recommended Practice for Numbering Metals and Alloys 3. Ordering Information 3.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this specification. Such requirements may include but are not limited to the following: Quantity (weight or number of pieces); Name of material: stainless steel; Form (bars, angles, etc.); Condition (Section 5.1); Finish (Section 4 of Specification A 484/A 484M); Surface preparation of shapes (Section 4 of Specification A 484/A 484M); Applicable dimensions including size, thickness, width, and length; Cross section (round, square, etc.); Type or UNS designation (Table 1); ASTM designation and date of issue; and 462.1

2 2001 SECTION II Whether bars are to be rolled as bars or cut from strip or plate Test for magnetic permeability when specified by customer purchase order when ordering Types 201 and Special requirements. NOTE 4 A typical ordering description is as follows: 5,000 lb (2268 kg) Stainless Steel Bars, Annealed and Centerless Ground, in. (38.10 mm) Round, 10 to 12 ft (3.05 to 3.66 m) in length, Type 304, ASTM Specification A 276 dated. End use: machined valve parts. 4. General Requirements 4.1 In addition to the requirements of this specification, all requirements of the current edition of Specification A 484/A 484M shall apply. Failure to comply with the general requirements of Specification A 484/A 484M constitutes nonconformance to this specification. 5. Manufacture 5.1 Condition: Bars shall be furnished in one of the following conditions listed in the Mechanical Requirements table: Condition A Annealed Condition H Hardened and tempered at a relatively low temperature Condition T Hardened and tempered at a relatively high temperature Condition S Strain Hardened Relatively light cold work. work Condition B Relatively severe cold 6. Chemical Composition 6.1 The steel shall conform to the requirements for chemical composition specified in Table Methods and practices relating to chemical analysis required by this specification shall be in accordance with Test Methods, Practices, and Terminology A Mechanical Properties Requirements 7.1 The material shall conform to the mechanical test requirements specified in Table The martensitic grades shall be capable of meeting the hardness requirements after heat treating as specified in Table Hardness measurements, when required, shall be made at a location midway between the surface and the center of the cross section. 8. Magnetic Permeability 8.1 When required by the purchase order, the magnetic permeability of Types 201 and 205 in the annealed condition shall not exceed 1.2 as tested by a Severntype indicator. 9. Certification 9.1 Upon request of the purchaser in the contract or order, the producer s certification that the material was manufactured and tested in accordance with this specification, together with a certified report of the test results shall be furnished at the time of the shipment. 10. Keywords 10.1 austenitic stainless steel; austenitic-ferritic duplex stainless steel; ferritic stainless steel; martensitic stainless steel; stainless steel bars; stainless steel shapes

3 PART A FERROUS MATERIAL SPECIFICATIONS TABLE 1 CHEMICAL REQUIREMENTS A Composition, % UNS Designation B Type Carbon Manganese Phosphorous Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Other Elements Austenitic Grades S S S S S20910 XM Cb , V S S21900 XM S21904 XM S24000 XM S24100 XM S Cb 0.10 S Cu S S B S S L c S N S30452 XM S LN S S S S Ce S S S S Cb Cb+Ta 10 C 1.10 S S S S Cb Cb+Ta 10 C 1.10 S Cu S S S L C S Ti Ti 5 (C+N) 0.70 S Cb Cb+Ta 10 C 1.10 (continued) 462.3

4 2001 SECTION II TABLE 1 CHEMICAL REQUIREMENTS A (CONT D) Composition, % UNS Designation B Type Carbon Manganese Phosphorous Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Other Elements Austenitic-Ferritic Grades S N S LN Cu S S S Cu 0.75 S Cu 0.75 S Ti 5 (C+N) 0.70 D S Cu S Cb+Ta 10 C min S Cb+Ta 10 C min, Ta 0.10 Co 0.20 S31100 XM Ti 0.25 S S Cu S32760 E Cu W Ferritic Grades S Al S S S Ti+Cb (C+N) 0.80 S S44627 XM-27 F G max G Cu 0.20 Cb S max C+N Cu 0.15 S C+N 0.25 Cu 0.15 (continued) 462.4

5 PART A FERROUS MATERIAL SPECIFICATIONS TABLE 1 CHEMICAL REQUIREMENTS A (CONT D) Composition, % UNS Designation B Type Carbon Manganese Phosphorous Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Other Elements Martensitic Grades S S S41040 XM Cb S H S S over S S S A S B S C S NOTES: A Maximum, unless range or minimum is indicated. B Designations established in accordance with Practice E 527 and SAE J1086. C For some applications, the substitution of Type 304L for Type 304, or Type 316L for Type 316 may be undesirable because of design, fabrication, or service requirements. In such cases, the purchaser should so indicate on the order. D Nitrogen content is to be reported for this grade. E %Cr+3.3 %Mo+16 %N 40. F Nickel plus copper shall be 0.50 % max. G Product analysis tolerance over the maximum limit for carbon and nitrogen shall be %. H Wrought version of CA 6NM

6 2001 SECTION II TABLE 2 MECHANICAL REQUIREMENTS Tensile Yield Elongation in Min. Min. 2 in. Reduction Brinell Strength, Strength, A (50 mm), B of Area, C Hardness, D Type Condition Finish Diameter or Thickness, in. (mm) ksi MPa ksi MPa or 4D Min. B % Min., % Max. Austenitic Grades 201, 202 A hot-finished or all S20161 A hot-finished or all A hot-finished or all XM-19 A hot-finished or all As hot- hot-finished or up to 2 (50.8), incl rolled over 2 to 3 (50.8 to 76.2), incl over 3 to 8 (76.2 to 203.2), incl S21800 A hot-finished or all XM-10, XM-11 A hot-finished or all XM-29 A hot-finished or all XM-28 A hot-finished or all S24565 A hot-finished or all S28200 A hot-finished or all , 302B, 304, 304LN, A hot-finished all 75 E E G , 308, 309, 309S, up to 1 2 (12.70) incl Cb, 310, 310S, over 1 2 (12.70) 75 E E Cb, 314, 316, 316LN, 316Cb, 316Ti, 317, 321, 347, L, 316L A hot-finished all G up to 1 2 (12.70) incl over 1 2 (12.70) (continued) 462.6

7 PART A FERROUS MATERIAL SPECIFICATIONS TABLE 2 MECHANICAL REQUIREMENTS (CONT D) Tensile Yield Elongation in Min. Min. 2 in. Reduction Brinell Strength, Strength, A (50 mm), B of Area, C Hardness, D Type Condition Finish Diameter or Thickness, in. (mm) ksi MPa ksi MPa or 4D Min. B % Min., % Max. Austenitic Grades 304N, 316N A hot-finished or all , 302, 304, 304N, B up to 3 4 (19.05) incl , 316N over 3 4 (19.05) to 1 (25.40) over 1 (25.40) to (31.75) over (31.75) to (38.10) over (38.10) to (44.45) , 304N, 316, 316N S up to 2 (50.8) incl over 2 to (50.8 to 63.5) incl over to 3 (63.5 to 76.2) incl XM-21, S30454, S31654 A hot-finished or all XM-21, S30454, S31654 B cold finished up to 1 (25.40) incl over 1 (25.40) to (31.75) over (31.75) to (38.10) over (38.10) to (44.45) S30815 A hot-finished or all S31254 A hot-finished or all S31725 A hot-finished or all S31726 A hot-finished or all (continued) 462.7

8 2001 SECTION II TABLE 2 MECHANICAL REQUIREMENTS (CONT D) Tensile Yield Elongation in Min. Min. 2 in. Reduction Brinell Strength, Strength, A (50 mm), B of Area, C Hardness, D Type Condition Finish Diameter or Thickness, in. (mm) ksi MPa ksi MPa or 4D Min. B % Min., % Max. Austenitic-Ferritic Grades XM-26 A hot-finished or all S31803 A hot-finished or all S32304 A hot-finished all S32550 A hot-finished or all S32760 A hot-finished or all S32760 S all Ferritic Grades 405 F A hot-finished all all A hot-finished all all A hot-finished or all S44400 A hot-finished all all , XM-27 A hot-finished all all S44700 A hot-finished all all S44800 A hot-finished all all (continued) 462.8

9 PART A FERROUS MATERIAL SPECIFICATIONS TABLE 2 MECHANICAL REQUIREMENTS (CONT D) Tensile Yield Elongation in Min. Min. 2 in. Reduction Brinell Strength, Strength, A (50 mm), B of Area, C Hardness, D Type Condition Finish Diameter or Thickness, in. (mm) ksi MPa ksi MPa or 4D Min. B % Min., % Max. Martensitic Grades 403, 410 A hot-finished all all , 410 T hot-finished all all XM-30 T hot-finished all all , 410 H hot-finished all all (rounds only) XM-30 A hot-finished all all A hot-finished or all T hot-finished or all S41500 T hot-finished or all A hot-finished all all S42010 A hot-finished or all all A hot-finished or all A, 440B, and 440C A hot-finished all all (S50400) A hot-finished or all T hot-finished or all NOTES: A Yield strength shall be determined by the 0.2% offset in accordance with Test Methods and Definitions A 370. An alternative method of determining yield strength may be used based on total extension under load of 0.5%. B For some specific products, it may not be practicable to use a 2 in. or 50 mm gage length. The use of sub-size test specimens, when necessary, is permissible in accordance with Test Methods and Definitions A 370. C Reduction of area does not apply on flat bars 3 16 in. (4.76 mm) and under in thickness as this determination is not generally made in this product size. D Or equivalent Rockwell hardness. E For extruded shapes of all Cr-Ni grades of Condition A, the yield strength shall be 25 ksi (170 MPa) min., and tensile strength shall be 70 ksi (480 MPa) min. F Material shall be capable of being heat treated to a maximum Brinell hardness of 250 when oil quenched from 1750 F (953 C). G For shapes having section thickness of 1 2 in. (12.5 mm) or less, 30% min., elongation is acceptable

10 2001 SECTION II TABLE 3 RESPONSE TO HEAT TREATMENT Heat Treatment Hardness Temperature B HRC, Type A F ( C), Min. Quenchant Min (955) Air (955) Air (955) Oil (995) Air 50 S (1010) Oil (1020) Oil A 1875 (1020) Air B 1875 (1020) Oil C 1875 (1020) Air 58 NOTES: A Samples for testing shall be in the form of a section not exceeding 3 8 in. (9.50 mm) in thickness. B Temperature tolerance is ±25 F (14 C)